1 /* Define POSIX options for Linux.
2 Copyright (C) 1996, 1997 Free Software Foundation, Inc.
3 This file is part of the GNU C Library.
5 The GNU C Library is free software; you can redistribute it and/or
6 modify it under the terms of the GNU Library General Public License as
7 published by the Free Software Foundation; either version 2 of the
8 License, or (at your option) any later version.
10 The GNU C Library is distributed in the hope that it will be useful,
11 but WITHOUT ANY WARRANTY; without even the implied warranty of
12 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
13 Library General Public License for more details.
15 You should have received a copy of the GNU Library General Public
16 License along with the GNU C Library; see the file COPYING.LIB. If not,
17 write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
18 Boston, MA 02111-1307, USA. */
21 * Never include this file directly; use <unistd.h> instead.
24 #ifndef _BITS_POSIX_OPT_H
25 #define _BITS_POSIX_OPT_H 1
27 /* Job control is supported. */
28 #define _POSIX_JOB_CONTROL 1
30 /* Processes have a saved set-user-ID and a saved set-group-ID. */
31 #define _POSIX_SAVED_IDS 1
33 /* Priority scheduling is supported. */
34 #define _POSIX_PRIORITY_SCHEDULING 1
36 /* Synchronizing file data is supported. */
37 #define _POSIX_SYNCHRONIZED_IO 1
39 /* The fsync function is present. */
40 #define _POSIX_FSYNC 1
42 /* Mapping of files to memory is supported. */
43 #define _POSIX_MAPPED_FILES 1
45 /* Locking of all memory is supported. */
46 #define _POSIX_MEMLOCK 1
48 /* Locking of ranges of memory is supported. */
49 #define _POSIX_MEMLOCK_RANGE 1
51 /* Setting of memory protections is supported. */
52 #define _POSIX_MEMORY_PROTECTION 1
54 /* Implementation supports `poll' function. */
57 /* Implementation supports `select' and `pselect' functions. */
58 #define _POSIX_SELECT 1
60 /* Only root can change owner of file. */
61 #define _POSIX_CHOWN_RESTRICTED 1
63 /* `c_cc' member of 'struct termios' structure can be disabled by
64 using the value _POSIX_VDISABLE. */
65 #define _POSIX_VDISABLE '\0'
67 /* Filenames are not silently truncated. */
68 #define _POSIX_NO_TRUNC 1
70 /* X/Open realtime support is available. */
71 #define _XOPEN_REALTIME 1
73 /* XPG4.2 shared memory is supported. */
76 /* Real-time signals are supported. */
77 #define _POSIX_REALTIME_SIGNALS 1
79 #endif /* bits/posix_opt.h */